java.util.concurrent.atomic.AtomicInteger

Question

public final int decrementAndGet() {
        for (;;) {                   // for (;;) 这样写是为什么  有什么好处
            int current = get();
            int next = current - 1;
            if (compareAndSet(current, next))
                return next;
        }
    }

Answer 1

就是不停的重试，和while(true)没啥区别